exhaust wrap - pro's and con's

Navyreg1970

Navyreg1970

0
I was reading up on the pros and cons of using exhaust wrap on the exhaust system from the exhaust manifold until the exhaust leaves the engine bay.

My understanding is that it maintains a higher exhaust temperature which allows for a more efficient flow at a slightly higher velocity - giving a slight scavenge to the exhaust stroke.

It also reduces the overall engine bay temperature due to the insulating effect

- however I have read a few negative things, but they have all been on high performance forums. The negative argument is that it causes accelerated wear and corrosion on the exhaust system and should only be used on high quality stainless systems - also if there are any slight gaps these can cause very hot local spots much hotter than a normal exhaust would be - which could lead to engine bay fires.

So does the benefit outweigh the bad points - would a 55bhp perkins diesel benefit, I cant see it producing the same heat output as a souped up Jap speed machine but the benefit of reducing the heat in the engine compartment makes it a fairly simple and possibly effective mod

The Dog is home....
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Exhaust wrap is a great thing to use on the petrol engines where it can also be used on the fuel line, it cuts a lot of heat in the bay which can cause fuel vapourisation and annoying breakdowns where you have to wait for the engine and bay to cool down before you can restart. Im not sure the diesels suffer from vapourisation, its not a problem I have ever come across, but anything that keeps the engine bay cooler has to be a good thing.

Bloody Commer`s!
 
Presuming you have a cast iron manifold, in which case it would be ok. On a diesel the EGT,s are lower, but a petrol one would warp.
There is a relationship between engine bay temps and power, simply put, the cooler bay = more power.

4650583641_dba2503b41_o.jpg

"You,re only supposed to blow the bloody SLIDING doors off"
 
I might give it a go - purely for the engine bay temp

The Dog is home....
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http:www.singleusemedical.co.uk
my new business
 
Corrosion tends to be a problem if the wrap gets wet, unlikely high up in a Commer.

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I am not a person, I am a number, 395 actually......Be seeing you!
If I told you I was a pathological liar, would you believe me?
 
quote:
Originally posted by bazzateer

Corrosion tends to be a problem if the wrap gets wet, unlikely high up in a Commer.




It,s when it,s parked up and the atmosphere is damp that the corrosion occurs. The wrap holds moisture like a sponge, unless you keep it in a dry garage.

4650583641_dba2503b41_o.jpg

"You,re only supposed to blow the bloody SLIDING doors off"
 
Parked up? Commers are for driving, not leaving parked up!

BazRockscropped.jpg
I am not a person, I am a number, 395 actually......Be seeing you!
If I told you I was a pathological liar, would you believe me?
 
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